Refs #25484 -- Removed incorrect unquoting in {% static %}.

Regression in 374e6230.

Thanks Florian Apolloner for the report and analysis.

django/templatetags/static.py

@@ -2,7 +2,7 @@ from django import template
 from django.apps import apps
 from django.utils.encoding import iri_to_uri
 from django.utils.html import conditional_escape
-from django.utils.six.moves.urllib.parse import unquote, urljoin
+from django.utils.six.moves.urllib.parse import urljoin
 
 register = template.Library()
 
@@ -102,7 +102,7 @@ class StaticNode(template.Node):
         return self.handle_simple(path)
 
     def render(self, context):
-        url = unquote(self.url(context))
+        url = self.url(context)
         if context.autoescape:
             url = conditional_escape(url)
         if self.varname is None:

tests/staticfiles_tests/storage.py

@@ -58,6 +58,11 @@ class PathNotImplementedStorage(storage.Storage):
         raise NotImplementedError
 
 
+class QueryStringStorage(storage.Storage):
+    def url(self, path):
+        return path + '?a=b&c=d'
+
+
 class SimpleCachedStaticFilesStorage(CachedStaticFilesStorage):
 
     def file_hash(self, name, content=None):

tests/staticfiles_tests/test_templatetags.py

 from __future__ import unicode_literals
 
+from django.test import override_settings
+
 from .cases import StaticFilesTestCase
 
 
@@ -8,5 +10,14 @@ class TestTemplateTag(StaticFilesTestCase):
     def test_template_tag(self):
         self.assertStaticRenders("does/not/exist.png", "/static/does/not/exist.png")
         self.assertStaticRenders("testfile.txt", "/static/testfile.txt")
-        self.assertStaticRenders("test.html?foo=1&bar=2", "/static/test.html?foo=1&bar=2", autoescape=False)
-        self.assertStaticRenders("test.html?foo=1&bar=2", "/static/test.html?foo=1&bar=2", autoescape=True)
+        self.assertStaticRenders("special?chars&quoted.html", "/static/special%3Fchars%26quoted.html")
+
+    @override_settings(STATICFILES_STORAGE='staticfiles_tests.storage.QueryStringStorage')
+    def test_template_tag_escapes(self):
+        """
+        Storage.url() should return an encoded path and might be overridden
+        to also include a querystring. {% static %} escapes the URL to avoid
+        raw '&', for example.
+        """
+        self.assertStaticRenders('a.html', 'a.html?a=b&c=d')
+        self.assertStaticRenders('a.html', 'a.html?a=b&c=d', autoescape=False)